20010101002211 has 4 divisors (see below), whose sum is σ = 20156160133752. Its totient is φ = 19864041870672.

The previous prime is 20010101002201. The next prime is 20010101002219. The reversal of 20010101002211 is 11220010101002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20010101002211 - 2¹⁴ = 20010100985827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010101002192 and 20010101002201.

It is not an unprimeable number, because it can be changed into a prime (20010101002219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73029565565 + ... + 73029565838.

It is an arithmetic number, because the mean of its divisors is an integer number (5039040033438).

Almost surely, 2^{20010101002211} is an apocalyptic number.

20010101002211 is a deficient number, since it is larger than the sum of its proper divisors (146059131541).

20010101002211 is a wasteful number, since it uses less digits than its factorization.

20010101002211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146059131540.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20010101002211 its reverse (11220010101002), we get a palindrome (31230111103213).

The spelling of 20010101002211 in words is "twenty trillion, ten billion, one hundred one million, two thousand, two hundred eleven".